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A fiery crash killed five young adults in Burbank, leaving the sole survivor with a broken leg. The victims were believed to be between 18 and 21 years old. Jane Yamamoto reports for NBC4 News at 6 p.m. on Saturday, Sept. 28, 2013. (Published Saturday, Sep 28, 2013)

Updated at 12:56 AM PST on Sunday, Sep 29, 2013

Five people died and a woman was injured when the speeding car they were in went out of control and slammed into a concrete abutment before bursting into flames near a Southern California freeway off ramp, police said on Saturday.

Police received a call about 4 a.m. of a Nissan Sentra fully engulfed in flames near North San Fernando Boulevard and Scott Road in Burbank, said Burbank Police Sgt. Darin Ryburn.

An 18-year-old female passenger managed to crawl out of the burning car. She suffered a broken leg and was being treated at a hospital for non-life threatening injuries.

Firefighters discovered the bodies of five others while putting out the flames, authorities said. Los Angeles County coroner's officials said they would use dental or fingerprint records to try to identify the remains.

While officials hadn't released names, Twitter users had already begun commemorating the victims.

"God bless the souls of the Teens who died in a car accident in Burbank," Twitter user Rebecca Pereyra ‏wrote.

Twitter user Nicolette Moreno wrote: "...such a sad day man. Thoughts with those families that lost their kids/ loved one."

Fire Battalion Chief Ron Barone told the Associated Press that paramedics reported smelling alcohol on the woman's breath, but police said they hadn't yet determined whether alcohol or drugs played a role in the crash.

The survivor was not the driver, but it's unclear if she was wearing a seat belt. She was one of six total people squished into the car, which had only five seatbelts, police said.

The car burst into flames after striking a guardrail near a Golden State (5) Freeway off ramp and careened into a freeway pillar. The stretch of curved road has a posted speed limit of 45 mph, which drivers often speed through at speeds up to 70 mph, police said.

The car fire ignited some brush along the freeway off ramp, which was temporarily closed.